diff --git a/mindspore/lite/src/runtime/kernel/opencl/cl/reshape.cl b/mindspore/lite/src/runtime/kernel/opencl/cl/reshape.cl
index a163fb9175..c22970b98b 100644
--- a/mindspore/lite/src/runtime/kernel/opencl/cl/reshape.cl
+++ b/mindspore/lite/src/runtime/kernel/opencl/cl/reshape.cl
@@ -1,24 +1,70 @@
 #pragma OPENCL EXTENSION cl_khr_fp16 : enable
+#define C4NUM 4
+#define UP_DIV(x, y) (((x) + (y) - (1)) / (y))
 __constant sampler_t smp_zero = CLK_NORMALIZED_COORDS_FALSE | CLK_ADDRESS_CLAMP | CLK_FILTER_NEAREST;
-__kernel void reshape_NHWC4(__read_only image2d_t src_data, __write_only image2d_t dst_data, int4 size, int4 size_out) {
+__kernel void reshape_NHWC4(__read_only image2d_t src_data, __write_only image2d_t dst_data, int4 src_size,
+                            int4 dst_size) {
   int X = get_global_id(0);
-  if (X >= size_out.x * size_out.y * size_out.z * size_out.w) {
+  int Y = get_global_id(1);
+  int CO4 = UP_DIV(dst_size.z, C4NUM);
+  int CO4_rem = dst_size.z % C4NUM;
+  if (X >= dst_size.x || Y > dst_size.y) {
     return;
   }
-  int in_img_x = size.z * size.w;
-  int out_img_x = size_out.z * size_out.w;
-  WRITE_IMAGE(dst_data, (int2)(X % out_img_x, X / out_img_x),
-              READ_IMAGE(src_data, smp_zero, (int2)(X % in_img_x, X / in_img_x)));
+  int CI4 = UP_DIV(src_size.x, C4NUM);
+  int CI4_rem = src_size.x % C4NUM;
+  int in_img_x = CI4 * src_size.y;
+  FLT4 res = (FLT4)(0.0f);
+  FLT tmp[4];
+  FLT res_tmp[4];
+  int gcnt = 0;
+  int start = 0;
+  int i = 0;
+  int j = 0;
+  int n = 0;
+  int cond = (((int)(CO4_rem > 0)) << 1) | (CI4_rem > 0);
+  switch (cond) {
+    case 1:
+      start = ((X / CO4 * dst_size.z + min(dst_size.z, (X % CO4) * C4NUM)) + dst_size.w * Y);
+      gcnt = start / src_size.x * CI4 + (start % src_size.x) / C4NUM;
+      start = (CI4 > 1 && gcnt < CI4) ? 0 : ((X + Y * dst_size.x) * C4NUM) % src_size.x % C4NUM;
+      for (i = 0, n = 0, j = start; i < 4; ++n, j = 0) {
+        int X_src = (gcnt + n) % in_img_x;
+        res = READ_IMAGE(src_data, smp_zero, (int2)(X_src, (gcnt + n) / in_img_x));
+        tmp[0] = res.x;
+        tmp[1] = res.y;
+        tmp[2] = res.z;
+        tmp[3] = res.w;
+        int k = (X_src % CI4) == (CI4 - 1) ? CI4_rem : 4;
+        for (; j < k && i < 4; ++j, ++i) {
+          res_tmp[i] = tmp[j];
+        }
+      }
+      res.x = res_tmp[0];
+      res.y = res_tmp[1];
+      res.z = res_tmp[2];
+      res.w = res_tmp[3];
+      WRITE_IMAGE(dst_data, (int2)(X, Y), res);
+      break;
+    default:
+      gcnt = X + dst_size.x * Y;
+      res = READ_IMAGE(src_data, smp_zero, (int2)(gcnt % in_img_x, gcnt / in_img_x));
+      WRITE_IMAGE(dst_data, (int2)(X, Y), res);
+  }
 }
 
-__kernel void reshape_NC4HW4(__read_only image2d_t src_data, __write_only image2d_t dst_data, int4 size,
-                             int4 size_out) {
+__kernel void reshape_NC4HW4(__read_only image2d_t src_data, __write_only image2d_t dst_data, int4 src_size,
+                             int4 dst_size) {
   int X = get_global_id(0);
-  if (X >= size_out.x * size_out.y * size_out.z * size_out.w) {
+  int Y = get_global_id(1);
+  int CO4 = UP_DIV(dst_size.z, C4NUM);
+  int CO4_rem = dst_size.z % C4NUM;
+  if (X >= dst_size.x || Y > dst_size.y) {
     return;
   }
-  int in_img_x = size.z;
-  int out_img_x = size_out.z;
-  WRITE_IMAGE(dst_data, (int2)(X % out_img_x, X / out_img_x),
-              READ_IMAGE(src_data, smp_zero, (int2)(X % in_img_x, X / in_img_x)));
+  int CI4 = UP_DIV(src_size.x, C4NUM);
+  int CI4_rem = src_size.x % C4NUM;
+  int in_img_x = CI4 * src_size.y;
+  int gcnt = X + dst_size.x * Y;
+  WRITE_IMAGE(dst_data, (int2)(X, Y), READ_IMAGE(src_data, smp_zero, (int2)(gcnt % in_img_x, gcnt / in_img_x)));
 }
diff --git a/mindspore/lite/src/runtime/kernel/opencl/kernel/concat.cc b/mindspore/lite/src/runtime/kernel/opencl/kernel/concat.cc
index 935a154f67..b5555b672a 100644
--- a/mindspore/lite/src/runtime/kernel/opencl/kernel/concat.cc
+++ b/mindspore/lite/src/runtime/kernel/opencl/kernel/concat.cc
@@ -76,6 +76,7 @@ int ConcatOpenCLKernel::Init() {
 
   auto param = reinterpret_cast<ConcatParameter *>(this->op_parameter_);
   MS_LOG(DEBUG) << " concat at axis=:  " << param->axis_;
+  param->axis_ = (param->axis_ == -1) ? (in_tensors_[0]->shape().size() - 1) : param->axis_;
   if (param->axis_ < 0 || param->axis_ > 3) {
     MS_LOG(ERROR) << " only support axis >= 0 and axis <= 3 ";
     return RET_ERROR;
diff --git a/mindspore/lite/src/runtime/kernel/opencl/kernel/reshape.cc b/mindspore/lite/src/runtime/kernel/opencl/kernel/reshape.cc
index eaead966ac..63d0ca4f24 100644
--- a/mindspore/lite/src/runtime/kernel/opencl/kernel/reshape.cc
+++ b/mindspore/lite/src/runtime/kernel/opencl/kernel/reshape.cc
@@ -38,12 +38,6 @@ int ReshapeOpenCLKernel::Init() {
     MS_LOG(ERROR) << "Reshape output size should in 2,4";
     return RET_ERROR;
   }
-  if ((in_tensors_[0]->shape().back() % 4 != 0 || out_tensors_[0]->shape().back() % 4 != 0) &&
-      in_tensors_[0]->shape().back() != out_tensors_[0]->shape().back()) {
-    MS_LOG(ERROR) << "Reshape input channel align 4 should equal output channel, cin:" << in_tensors_[0]->shape().back()
-                  << " cout:" << out_tensors_[0]->shape().back();
-    return RET_ERROR;
-  }
   if (in_tensors_[0]->shape().size() == 2) {
     inShape = {in_tensors_[0]->shape()[0], 1, 1, in_tensors_[0]->shape()[1]};
   } else {
@@ -81,6 +75,10 @@ int ReshapeOpenCLKernel::GetImageSize(size_t idx, std::vector<size_t> *img_size)
   int h = outShape[1];
   int w = outShape[2];
   int c = outShape[3];
+  if (img_size_.size() == OpenCLImageSizeIndex::IDX_NUM) {
+    *img_size = img_size_;
+    return RET_OK;
+  }
   if (op_format_ == schema::Format::Format_NHWC4) {
     im_dst_x = w * UP_DIV(c, C4NUM);
     im_dst_y = n * h;
@@ -98,6 +96,7 @@ int ReshapeOpenCLKernel::GetImageSize(size_t idx, std::vector<size_t> *img_size)
   img_size->clear();
   std::vector<size_t> vec{im_dst_x, im_dst_y, img_dtype};
   *img_size = vec;
+  img_size_ = vec;
   return RET_OK;
 }
 
@@ -105,15 +104,15 @@ int ReshapeOpenCLKernel::Run() {
   MS_LOG(DEBUG) << this->name() << " Running!";
 
   std::vector<size_t> local = {};
-  std::vector<size_t> global = {
-    static_cast<size_t>(outShape[0] * outShape[1] * outShape[2] * UP_DIV(outShape[3], C4NUM))};
-  cl_int4 size = {inShape[0], inShape[1], inShape[2], UP_DIV(inShape[3], C4NUM)};
-  cl_int4 size_out = {outShape[0], outShape[1], outShape[2], UP_DIV(outShape[3], C4NUM)};
+  std::vector<size_t> global{img_size_[0], img_size_[1]};
+  cl_int4 src_size = {inShape[3], inShape[2], inShape[1], inShape[0]};
+  cl_int4 dst_size = {static_cast<cl_int>(img_size_[0]), static_cast<cl_int>(img_size_[1]), outShape[3],
+                      outShape[3] * outShape[2]};
   int arg_idx = 0;
   ocl_runtime_->SetKernelArg(kernel_, arg_idx++, in_tensors_[0]->data_c());
   ocl_runtime_->SetKernelArg(kernel_, arg_idx++, out_tensors_[0]->data_c());
-  ocl_runtime_->SetKernelArg(kernel_, arg_idx++, size);
-  ocl_runtime_->SetKernelArg(kernel_, arg_idx++, size_out);
+  ocl_runtime_->SetKernelArg(kernel_, arg_idx++, src_size);
+  ocl_runtime_->SetKernelArg(kernel_, arg_idx++, dst_size);
   ocl_runtime_->RunKernel(kernel_, global, local, nullptr);
   return RET_OK;
 }
diff --git a/mindspore/lite/src/runtime/kernel/opencl/opencl_kernel.h b/mindspore/lite/src/runtime/kernel/opencl/opencl_kernel.h
index a3f36c5c66..17519d547e 100644
--- a/mindspore/lite/src/runtime/kernel/opencl/opencl_kernel.h
+++ b/mindspore/lite/src/runtime/kernel/opencl/opencl_kernel.h
@@ -25,6 +25,7 @@
 namespace mindspore::kernel {
 
 enum class OpenCLMemType { BUF, IMG };
+enum OpenCLImageSizeIndex { IDX_X = 0, IDX_Y, IDX_DTYPE, IDX_NUM };
 
 struct OpenCLToFormatParameter {
   OpParameter op_parameter;
@@ -66,6 +67,7 @@ class OpenCLKernel : public LiteKernel {
   schema::Format op_format_{schema::Format::Format_NHWC4};
   lite::opencl::OpenCLRuntimeWrapper ocl_runtime_wrap_;
   lite::opencl::OpenCLRuntime *ocl_runtime_;
+  std::vector<size_t> img_size_;
 };
 }  // namespace mindspore::kernel
 
diff --git a/mindspore/lite/test/ut/src/runtime/kernel/opencl/reshape_tests.cc b/mindspore/lite/test/ut/src/runtime/kernel/opencl/reshape_tests.cc
index 91b5b733ca..dcbfcf4fdb 100644
--- a/mindspore/lite/test/ut/src/runtime/kernel/opencl/reshape_tests.cc
+++ b/mindspore/lite/test/ut/src/runtime/kernel/opencl/reshape_tests.cc
@@ -29,33 +29,23 @@ class TestReshapeOpenCL : public mindspore::CommonTest {
   TestReshapeOpenCL() {}
 };
 
-void RunTestCaseReshape(const std::vector<int> &shape, void *input_data, void *output_data, bool enable_fp16,
-                        bool is_output_2d) {
+void RunTestCaseReshape(const std::vector<int> &shape_in, const std::vector<int> &shape_out, void *input_data,
+                        void *output_data, bool enable_fp16) {
   auto ocl_runtime = lite::opencl::OpenCLRuntimeWrapper().GetInstance();
   ocl_runtime->Init();
   size_t dtype_size = enable_fp16 ? sizeof(float16_t) : sizeof(float);
   ocl_runtime->SetFp16Enable(enable_fp16);
   auto allocator = ocl_runtime->GetAllocator();
-  int n = shape[0];
-  int h = shape[1];
-  int w = shape[2];
-  int c = shape[3];
-  int oh = shape[4];
-  int ow = shape[5];
-  std::vector<int> input_shape = {n, h, w, c};
   auto tensor_x_ptr = std::make_unique<lite::Tensor>(TypeId(enable_fp16 ? kNumberTypeFloat16 : kNumberTypeFloat32),
-                                                     input_shape, schema::Format_NHWC);
+                                                     shape_in, schema::Format_NHWC);
   auto tensor_x = tensor_x_ptr.get();
   if (tensor_x == nullptr) {
     MS_LOG(ERROR) << "tensor_x create error.";
     return;
   }
-  std::vector<int> out_shape = {n, oh, ow, c};
-  if (is_output_2d) {
-    out_shape = {n, h * w * c};
-  }
+  bool is_output_2d = shape_out.size() == 2;
   auto tensor_out_ptr =
-    std::make_unique<lite::Tensor>(TypeId(enable_fp16 ? kNumberTypeFloat16 : kNumberTypeFloat32), out_shape,
+    std::make_unique<lite::Tensor>(TypeId(enable_fp16 ? kNumberTypeFloat16 : kNumberTypeFloat32), shape_out,
                                    is_output_2d ? schema::Format_NC : schema::Format_NHWC);
   auto tensor_out = tensor_out_ptr.get();
   if (tensor_out == nullptr) {
@@ -102,74 +92,108 @@ void RunTestCaseReshape(const std::vector<int> &shape, void *input_data, void *o
 }
 
 TEST_F(TestReshapeOpenCL, ReshapeFp32) {
-  int n = 1;
-  int h = 1;
-  int w = 1;
-  int c = 7;
-  int oh = 1;
-  int ow = 1;
-  std::vector<int> shape = {n, h, w, c, oh, ow};
+  std::vector<int> shape_in = {1, 1, 1, 7};
+  std::vector<int> shape_out = {1, 7};
   std::vector<float> input_data = {0.0f, 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f};
   std::vector<float> output_data = {0.0f, 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f};
 
-  RunTestCaseReshape(shape, input_data.data(), output_data.data(), false, true);
+  RunTestCaseReshape(shape_in, shape_out, input_data.data(), output_data.data(), false);
 }
 
 TEST_F(TestReshapeOpenCL, ReshapeFp16) {
-  int n = 1;
-  int h = 1;
-  int w = 1;
-  int c = 7;
-  int oh = 1;
-  int ow = 1;
-  std::vector<int> shape = {n, h, w, c, oh, ow};
+  std::vector<int> shape_in = {1, 1, 1, 7};
+  std::vector<int> shape_out = {1, 7};
   std::vector<float16_t> input_data = {0.0f, 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f};
   std::vector<float16_t> output_data = {0.0f, 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f};
 
-  RunTestCaseReshape(shape, input_data.data(), output_data.data(), true, true);
+  RunTestCaseReshape(shape_in, shape_out, input_data.data(), output_data.data(), true);
 }
 
 TEST_F(TestReshapeOpenCL, Reshape4DFp32) {
-  int n = 1;
-  int h = 2;
-  int w = 2;
-  int c = 3;
-  int oh = 1;
-  int ow = 4;
-  std::vector<int> shape = {n, h, w, c, oh, ow};
+  std::vector<int> shape_in = {1, 2, 2, 3};
+  std::vector<int> shape_out = {1, 1, 4, 3};
   std::vector<float> input_data = {0.0f, 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f, 10.0f, 11.0f};
   std::vector<float> output_data = {0.0f, 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f, 10.0f, 11.0f};
 
-  RunTestCaseReshape(shape, input_data.data(), output_data.data(), false, false);
+  RunTestCaseReshape(shape_in, shape_out, input_data.data(), output_data.data(), false);
 }
 
 TEST_F(TestReshapeOpenCL, Reshape4DFp16) {
-  int n = 1;
-  int h = 2;
-  int w = 2;
-  int c = 3;
-  int oh = 1;
-  int ow = 4;
-  std::vector<int> shape = {n, h, w, c, oh, ow};
+  std::vector<int> shape_in = {1, 2, 2, 3};
+  std::vector<int> shape_out = {1, 1, 4, 3};
   std::vector<float16_t> input_data = {0.0f, 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f, 10.0f, 11.0f};
   std::vector<float16_t> output_data = {0.0f, 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f, 10.0f, 11.0f};
 
-  RunTestCaseReshape(shape, input_data.data(), output_data.data(), true, false);
+  RunTestCaseReshape(shape_in, shape_out, input_data.data(), output_data.data(), true);
 }
 
 TEST_F(TestReshapeOpenCL, Reshape4D2DFp32) {
-  int n = 1;
-  int h = 2;
-  int w = 2;
-  int c = 4;
-  int oh = 2;
-  int ow = 2;
-  std::vector<int> shape = {n, h, w, c, oh, ow};
+  std::vector<int> shape_in = {1, 2, 2, 4};
+  std::vector<int> shape_out = {4, 4};
   std::vector<float> input_data = {0.0f, 1.0f, 2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,
                                    8.0f, 9.0f, 10.0f, 11.0f, 12.0f, 13.0f, 14.0f, 15.0f};
   std::vector<float> output_data = {0.0f, 1.0f, 2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,
                                     8.0f, 9.0f, 10.0f, 11.0f, 12.0f, 13.0f, 14.0f, 15.0f};
 
-  RunTestCaseReshape(shape, input_data.data(), output_data.data(), false, true);
+  RunTestCaseReshape(shape_in, shape_out, input_data.data(), output_data.data(), false);
+}
+TEST_F(TestReshapeOpenCL, Reshape4DFp32Rem10) {
+  std::vector<int> shape_in = {1, 3, 2, 4};
+  std::vector<int> shape_out = {1, 4, 2, 3};
+  std::vector<float> input_data = {0.0f,  1.0f,  2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,  8.0f,  9.0f,  10.0f, 11.0f,
+                                   12.0f, 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f, 19.0f, 20.0f, 21.0f, 22.0f, 23.0f};
+  std::vector<float> output_data = {0.0f,  1.0f,  2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,  8.0f,  9.0f,  10.0f, 11.0f,
+                                    12.0f, 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f, 19.0f, 20.0f, 21.0f, 22.0f, 23.0f};
+
+  RunTestCaseReshape(shape_in, shape_out, input_data.data(), output_data.data(), false);
+}
+TEST_F(TestReshapeOpenCL, Reshape4DFp32Rem01Test0) {
+  std::vector<int> shape_in = {1, 4, 2, 3};
+  std::vector<int> shape_out = {1, 3, 2, 4};
+  std::vector<float> input_data = {0.0f,  1.0f,  2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,  8.0f,  9.0f,  10.0f, 11.0f,
+                                   12.0f, 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f, 19.0f, 20.0f, 21.0f, 22.0f, 23.0f};
+  std::vector<float> output_data = {0.0f,  1.0f,  2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,  8.0f,  9.0f,  10.0f, 11.0f,
+                                    12.0f, 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f, 19.0f, 20.0f, 21.0f, 22.0f, 23.0f};
+
+  RunTestCaseReshape(shape_in, shape_out, input_data.data(), output_data.data(), false);
+}
+TEST_F(TestReshapeOpenCL, Reshape4DFp32Rem01Test1) {
+  std::vector<int> shape_in = {1, 2, 2, 5};
+  std::vector<int> shape_out = {1, 1, 5, 4};
+  std::vector<float> input_data = {0.0f,  1.0f,  2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,  8.0f,  9.0f,
+                                   10.0f, 11.0f, 12.0f, 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f, 19.0f};
+  std::vector<float> output_data = {0.0f,  1.0f,  2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,  8.0f,  9.0f,
+                                    10.0f, 11.0f, 12.0f, 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f, 19.0f};
+
+  RunTestCaseReshape(shape_in, shape_out, input_data.data(), output_data.data(), false);
 }
+TEST_F(TestReshapeOpenCL, Reshape4DFp32Rem01Test2) {
+  std::vector<int> shape_in = {1, 4, 2, 5};
+  std::vector<int> shape_out = {1, 2, 5, 4};
+  std::vector<float> input_data = {
+    0.0f,  1.0f,  2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,  8.0f,  9.0f,  10.0f, 11.0f, 12.0f, 13.0f,
+    14.0f, 15.0f, 16.0f, 17.0f, 18.0f, 19.0f, 20.0f, 21.0f, 22.0f, 23.0f, 24.0f, 25.0f, 26.0f, 27.0f,
+    28.0f, 29.0f, 30.0f, 31.0f, 32.0f, 33.0f, 34.0f, 35.0f, 36.0f, 37.0f, 38.0f, 39.0f,
+  };
+  std::vector<float> output_data = {
+    0.0f,  1.0f,  2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,  8.0f,  9.0f,  10.0f, 11.0f, 12.0f, 13.0f,
+    14.0f, 15.0f, 16.0f, 17.0f, 18.0f, 19.0f, 20.0f, 21.0f, 22.0f, 23.0f, 24.0f, 25.0f, 26.0f, 27.0f,
+    28.0f, 29.0f, 30.0f, 31.0f, 32.0f, 33.0f, 34.0f, 35.0f, 36.0f, 37.0f, 38.0f, 39.0f,
+  };
+
+  RunTestCaseReshape(shape_in, shape_out, input_data.data(), output_data.data(), false);
+}
+TEST_F(TestReshapeOpenCL, Reshape4DFp32Rem11) {
+  std::vector<int> shape_in = {1, 3, 2, 5};
+  std::vector<int> shape_out = {1, 5, 2, 3};
+  std::vector<float> input_data = {0.0f,  1.0f,  2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,  8.0f,  9.0f,
+                                   10.0f, 11.0f, 12.0f, 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f, 19.0f,
+                                   20.0f, 21.0f, 22.0f, 23.0f, 24.0f, 25.0f, 26.0f, 27.0f, 28.0f, 29.0f};
+  std::vector<float> output_data = {0.0f,  1.0f,  2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,  8.0f,  9.0f,
+                                    10.0f, 11.0f, 12.0f, 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f, 19.0f,
+                                    20.0f, 21.0f, 22.0f, 23.0f, 24.0f, 25.0f, 26.0f, 27.0f, 28.0f, 29.0f};
+
+  RunTestCaseReshape(shape_in, shape_out, input_data.data(), output_data.data(), false);
+}
+
 }  // namespace mindspore